The results of the present analysis for the Taylor expansion parameterization, together
with the earlier results from
KTeV [1]},
KLOE [2]}, [3]},
NA48 [4]}, [5]}, and
ISTRA+ [6]}, [7]} experiments, as reviewed in
[8]}, are shown in Fig. REF , REF . The present results are in agreement with the previous measurements and have similar or better precision.
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